What does the Localizer (LOC) provide on an ILS?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What does the Localizer (LOC) provide on an ILS?

Explanation:
The Localizer provides horizontal guidance to keep you aligned with the runway centerline on final approach. It sends a signal that the CDI (course deviation indicator) uses to show whether you’re left or right of the extended runway centerline, so you can fly a course that keeps you on the runway’s approach path. Vertical guidance is supplied by the glideslope, not the localizer, and distance information (like DME) comes from separate systems. So the localizer’s job is left/right guidance along the centerline, not vertical guidance or distance.

The Localizer provides horizontal guidance to keep you aligned with the runway centerline on final approach. It sends a signal that the CDI (course deviation indicator) uses to show whether you’re left or right of the extended runway centerline, so you can fly a course that keeps you on the runway’s approach path. Vertical guidance is supplied by the glideslope, not the localizer, and distance information (like DME) comes from separate systems. So the localizer’s job is left/right guidance along the centerline, not vertical guidance or distance.

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